Warning: This article discusses domestic violence. The footage above may be distressing to some viewers.

A man has been arrested after allegedly attacking his wife at a bar, and then posting surveillance footage of the incident to his Facebook page with the caption "wife sorted lol".

Tim Sheahan, 42, publican at the Field Bar in Neasden, northwest London, was reportedly drinking at the pub late on Sunday, June 18, when he got into a verbal argument and then a fistfight with a patron. Several pieces of furniture appears to have been damaged in the scuffle.

In the footage, he can be seen later walking behind the bar and allegedly grabbing a woman – believed to be his wife – dragging her by her hair to the floor outside the bar area.

The woman then sits, apparently dazed by the incident, as Sheahan disappears from view.

It's not known why Sheahan posted the footage to his personal Facebook page, however he was arrested on suspicion of assault and taken to a police station in north London.

A Metropolitan Police spokesman confirmed the alleged incident is "believe to be domestic-related".

"Police are investigating an allegation of assault at licensed premises on Neasden Lane, NW10, on the morning of Sunday, 18 June," the spokesman said.

"[A 42-year-old man] was released under investigation pending further enquiries."

If you or anyone you know needs help for domestic violence, visit Australia's national sexual assault, domestic and family violence service, 1800 RESPECT, or call 1800 737 732.